I was just sitting here putting together a two week meal plan from my Harmony House backpacker's kit and ran across this thread. This is my fourth year using them and it is my "must have" food for ultra-lightweight backpacking. I also have the pint sized containers in the kitchen, and the gallon sized in storage to keep a rotating stock. I use them regularly in every day cooking and experiment with backpacking recipes. Their selection is perfect for vegetarian hikers and the meat substitutes like "hammish bits" are very good. I also take olive oil, vegetable bouillon, and seasonings to put together a variety of meals.
Harmony House doesn't sell it, but I found a source for powdered soy milk, peanut butter, and cheddar cheese. That gives me more variety. I pack chia seeds which which soak up a large amount of water and are good for staying hydrated on the trail like the Aztec message runners did. Along with raisins, I find that Goji berries and sunflower seeds make a great trail mix. If I take some flax seed crackers made in my dehydrator at home, then I've got a perfect healthy snack with rehydrated peanut butter and fruit. If it doesn't have water in it, it's going to weigh less. I also supplement meals with wild greens and anything else edible I can find during when I hike. You have to know vegetation in the hiking area well if you're going to try that option.
Because dehydrated foods are inferior to fresh, I also sprout greens on long trips. I made small burlap bags that hang from my backpack for this purpose. A few tablespoons each of brocolli, mung, alfalfa, and watercress last for two weeks on the trail. I soak a half-teaspoon per day and have four bags going at any one time.
Yes, it's an acquired taste. >^;^